adult 4-6 mm, larva to 7-8 mm
Adult: each elytron with 5-10 longitudinal striae
pantropical genus feebly represented in temperate zones; in our area, more diverse in the south (6 spp. in FL)(3)
pioneer species, often found in temporary pools/puddles and in water bodies with accumulated organic debris (e.g. hollow trees)(3)
larvae and adults feed on copepods, ostracods, springtails, and aquatic fly larvae
In Ecuador, many species are found in fallen water-filled flower bracts of the palm tree Iriartea deltoidea. Large bracts may hold up to 5 litres of water, and contain more than 100 individual beetles.